Dotnet (maybe corresponding to C# 4.x) is warming up to the ideas of Actor-based Concurrency, used in Erlang and Scala. It's not meant to replace, but to be used as an alternative in some situations (different problems probably require different ways to implement concurrency):
http://www.ddj.com/go-parallel/article/printableArticle.jhtml?articleID=214502187 http://weblogs.asp.net/podwysocki/archive/2009/03/02/introducing-maestro-a-dsl-for-actor-based-concurrency.aspx http://blogs.msdn.com/maestroteam/ Bye, bearophile
